For more than 40 years, VÍTKOVICE has been producing and delivering large capacity tanks made of our own glass fused plates with bolted joints to the Czech Republic as well as to customers abroad. These plates are the basic structure element and characteristic feature of the HYDROVIT® WWTP made by VÍTKOVICE. Wastewater treatment plants are process assemblies for treatment of wastewater from municipalities, from food industry, agricultural industry, and other industries and they return water with the desired strict environmental parameters back to nature.
The cleaning process of our WWTP is based on thorough mechanical preliminary treatment and biological treatment with the use of long-term activation and stabilization of sludge. The high efficiency of removal of organic matter and significant reduction of nitrogen compounds is achieved by using a combination of nitrification and denitrification. Upon request the plant may also include chemical removal of phosphorous or other elements and compounds. We offer comprehensive services, many years of experience and our own know-how for implementation of process assemblies or individual components of biological wastewater treatment plants that are a result of cooperation with leading water management experts. For deliveries of the WWTP program we have our own design, production, delivery, and service capacities.
SHORT-TERM CONSTRUCTION PERIOD
- delivery in 3 months from the signing of a contract
- commission in 5 months from the signing of a contract
MINIMAL AND SIMPLE MAINTENANCE
- simple facility in terms of structure
- automatic standby of main units
- continuous tightness check-up
LOW DEMANTD FOR CIVIL WORKS
- small built-up area
- minimum site excavation
- simple concrete basement of biological tanks
VARIABILITY OF TECHNOLOGY SETTING
- easy modification of above-ground tanks
- one or multi unit setting of WWTP
- possibility of step-by-step construction
- easy modular technology extension
EASY LIQUIDATION AFTER THE SERVICE LIFE TERMINATION
- tanks and technological facility can be scrapped as metal scrap
- or tanks can be dismounted and enameled plates can be used to other purposes
The basis of the treatment plant is a biological triple tank, which is composed of three concentrically arranged tanks of enamelled plates. In the biological triple tank there are spaces for activation, sedimentation, and the storage of sludge. Activation is aerated by finely bubbling elements. The technology for activation cleaning can be realised in the form of pre-denitrification (D-N), or with the regeneration of sludge (R-N-D). The design with a pumping sump with mechanical pre-treatment, valve shafts, and sludge dewatering equipment is custom designed to fit the customer's wishes. The triple tank is fitted with service bridges made of composite materials, ensuring long life with minimal maintenance. The HYDROVIT ® SI system can also be installed in similar enamelled tanks located inside the building.
A triple tank consists of centrifugally arranged tanks - sludge, activation and sedimentation tanks of diameters depending on the respective waste water treatment plant size. Each tank can be drained by drainage piping DN 150 within the concrete foundation. The sedimentation and activation tanks are provided with a safety flap valve on the shell in order to restrict external overpressure.
The triple tank is provided with walkway bridges made from porous grids to allow access to aeration valves, drive units for the sedimentation tank wipers, agitators and pumps. Lockboxes for manual operator control are situated on the handrail. A roofed triple tank is provided with a pedestrian platform made from galvanized plates and is located in the circular ring of the sludge and activation tanks on which a floor is placed. The sedimentation tank is also provided with a transverse bridge covered by plates. In a roofed area, there is an operator room created by partition walls at the platform. At the same place there is also a blowing room and sanitary facilities of service.
The tank bottom is flat, concrete, moderately inclined toward the centre, and wiped with a two-arm wiper. A wiper drive unit is situated under the pedestrian bridge and is protected against weathering. From the centre of the tank, there is a pipe leading through concrete basement. This pipe enables outlet of returned and excess sludge. The activation mixture enters a central cylinder suspended on a pedestrian bridge. A collection chute with an adjustable overflow edge with 90° cuts is suspended on the upper reinforcing ring of the sedimentation tank. In sedimentation tank the wiping of floating dirts is solved either by two-arm level wiper or by height-adjustable bath with a pump.
The internal circular ring of the biological triple tank serves for activation. The tank is separated by partition walls into nitrification, de-nitrification and regeneration segments required by the applied D-N or R-D-N technology. The nitrification and regeneration segments are aerated by fine bubble elements protected with rubber membranes. The aeration system is either anchored to the tank bottom or in “guided version”, which enables extraction and returning back of individual carrying tubes during the operation of the plant. The air distribution to aeration elements is in the stainless steel tubs. The de-nitrification is blended by a submersible screw agitator on the column. By a tight partition, there are submersible pumps of sludge reverse and inner activation mixture circulation between nitrification and denitrification. The output of both pumps can be continuously changed by a frequency transducer; and actual flow is measured in both cases by a flow meter.
The external circular ring of the biological triple tank serves as a sludge tank. The tanks is separated by the baffles on primary sedimentation area and sludge accumulation area. A sediment is moved from the primary sedimentation area to the sludge accumulation area by agitator. The sludge tank has 6-8 discharges in the concrete bottom, through which sludge is removed through the inspection chamber into the concentrator. The sludge tank can be equipped by a sand catcher and thickening tank, according to requirements. The tank is always covered and there are also entrances with trap doors for the access to inner equipment.
Activation with nitrification and preliminary de-nitrification. The operation is also available without automatic control. High denitrification efficiency. Organic compounds are preferably used for de-nitrification. High sludge load in de-nitrification increases the de-nitrification speed = a lower required volume of de-nitrification.
Activation with nitrification and preliminary de-nitrification and regeneration.The operation is also available without automatic control. High denitrification efficiency. The inclusion of regeneration increases the sludge concentration in de-nitrification, increases the de-nitrification speed nic compounds are preferably used for de-nitrification = high efficiency in nitrogen removal. The regeneration unit decreases a risk of the sludge swelling.
The plant is supplied in two primary variants:
- Partially roofed - only the sludge tank is roofed, accessories (blower room, operator room, shower, cloakroom, WC) including sludge drainage, are situated in separate operating building.
- Fully roofed - the cladding of the biological tank is increased by two layers supporting a cone roof (usually glass-fused plates). Accessories are situated at this roofed room above the triple tank, and the sludge drainage and inspection chambers are located in the roofed modules connected to the triple tank.
A characteristic feature of this waste water treatment plant is a biological double tank consisting of centrally arranged activation and sedimentation segments. Applying a suitable combination of large scale glass-fused tank sizes, a purpose-built treatment line can be assembled consisting of a precisely respective pollution source. Functional volumes are created in individual or combined tanks for equalization, primary and secondary sedimentation, activation, or concentration and storage of treatment Medias. Glass-fused anaerobic reactors and a biological sprinkling column can be integrated as well. Treatment plants are intended for treatment of community waters as well as industrial waste waters from slaughter houses, breweries, dairies, sugar refineries, conservation works, cider works, and other pollution sources in the food processing industry. The size of the treatment plant is only limited by economical use of our glass-fused steel tanks and is usually designed for substance loading up to 2500 kg/d BSK5
HYDROVIT® Р type WWTP is intended not only for wastewater treatment, but also finds application when treating waste water from slaughterhouses, breweries, dairies, sugar refineries, canneries, juice factories, and for other types of pollution in the food industry.
The working area of the treatment plant consists of the only tank (reactor) with a discontinuous treatment process. The activation tank and sedimentation tanks are not separated in terms of space, but time. The SB reactor is controlled by the automated system which responds quickly to very large scale changes in substance and hydraulic load. The applied technology of the mechanical-biological treatment with activated sludge guarantees high and permanent pollution removal efficiency. The alteration of anoxic and oxic processes provides very low residual pollution by BSK5 and N-NH4 in the treated water. The facility functionality is guaranteed at 30% inflow. The fine bubble system with blower output control significantly decreases not only consumption of electric power but also generation of aerosols. This, together with the blower of a low noise level, enables our treatment plant to be built in the immediate vicinity of a residential area.
HYDROVIT® SBR waste water treatment plants forem a type series with the following capacity stages:
m3/day - l/s
66 - 0,8
132 - 1,5
198 - 2,3
264 - 3,1
partition with circulation pumps
collection chute of the sedimentation tank
sludge tank cover
Flow rate Q24
м3/day - l/s
300 - 3,5
450 - 5,2
600 - 6,9
750 - 8,7
900 - 10,4
1050 - 12,2
Daily maximum Qd
Hour maximum Qh
Technology of the activation process
HYDROVIT® SI waste water treatment plants forem a type series with the following capacity stages: