We are the manufacturers of Sewage Treatment Plants. We offer Sewage treatment of various capacity that includes Packaged type or custom made type designs. Sewage treatment or domestic Wastewater treatment is the process of removing contaminants from waste water and household sewage, both runoff (effluents) and domestic. It includes physical, chemical, biological and tertiary processes to remove physical, chemical and biological contaminants.
Its objective is to produce a waste stream (or treated effluent) and a solid waste or sludge suitable for discharge or reuse back into the environment.. Nishu Enterprise offers aerobic system with different Aeration options like Extended Aeration System, Moving Bed Bioreactor (MBBR), Submerged Aerated Fixed Film (SAFF), Membrane Bioreactor (MBR) and anaerobic system with Up-flow Anaerobic Digester.
We are the manufacturers of Water Clarifier.
Product Description
Clarification is the process to remove suspended solids from water. It is the economical and an essential part of effluent treatment plants and other raw water treatment plants. Depending upon the plant, the clarifiers are available in wide varieties of shapes. In large scale wastewater treatment facilities, large circular open-air clarifiers are preferred.
Types of clarifiers:
- Solids Contact Clarifiers
- Secondary Clarifiers
- Primary Clarifiers
Working:
- The clarifiers operate on the principle of gravity-separation. The separate solids would flow downward and settle on tapered floor.
- The untreated oil is forced towards the periphery of the bowl by centrifugal forces
- Then the oil is passed up through the disc stack
- Actual separation takes place here in the channel formed between two discs
- The two forces act on each solid or liquid particle
- The particles are pushed upwards with the oil stream towards the centre while the centrifugal force directs it to the periphery
- The residual force on denser particles will drive them towards the periphery
- While the less dense particles (oil) will be directed towards the centre of the bowl and raise to the outlet connection
Technical specifications:
- Rotational speeds: 7,000 to 9,000 rpm
- Number of discs: up to 150
- Separation distance between Discs: 0.5-0.6 mm
We are the manufacturers of Clariflocculators. Clariflocculators are combination of both flocculation as well as clarification. With this, the installation of plant becomes economical and faster. All these clariflocculators are best suited for water treatment plant, waste treatment plant and effluent treatment plant. Available as centre driven and end driven models, these clariflocculators consists of concentric circular compartments.
Types available:
- Centre Driven Clariflocculator
- End Driven Clariflocculator
- Full Bridge Clariflocculator
- Half Bridge Clariflocculator
Working:
- The water is fed into the clariflocculator
- Flocculating paddles increases the flocullation of feed solids
- In the process heavy particles settle to the bottom
- Remaining liquid flows upward in the clarifier zone
- Then the clarified liquid is discharged over a peripheral weir into the peripheral launder
- The sludge deposited is then routed to the sludge chambers and discharged
Technical specifications:
- Diameter: 4M to maximum upto 70M
- Bridge width varies from 0.75M to 1.5M
- Number of flocculators: 1 to 4
Application areas:
- Municipal water treatment plants
- Primary Treatment in ETP
- Heavy Metal Removal
NISHU ENTERPRISE offers an effectual range of Effluent Treatment Plants for recycling of wastewater to reduce water demand. The comprehensive treatment solution works at various levels and involves various physical, chemical, biological and membrane processes. AGUAPURO also provides effluent treatment solutions for various types of industrial waste water. Customized systems to suit the wide variety of effluents and to maintain efficiency are provided to industries. These systems include physic-chemical treatment, biological treatment, tertiary treatment and membrane separation process to achieve the zero-discharge standards laid by statutory authority. We provide innovative and economical systems for waste from industries like chemicals, drugs, pharmaceutical, refineries, dairy, ready mix plants & textile etc.
PROCESS OVERVIEW FOR ETP :
- Screening/ Grit chamber: To remove floatable matter and sand, grit, stones in raw effluent.
- Oil & grease trap: To remove floatable oil and grease from raw effluent.
- Primary treatment: Includes chemical treatment (coagulation, flocculation, neutralization) and solid-liquid separation for removal of suspended solids.
- Secondary Treatment: Includes biological treatment for reduction of BOD/COD and solid-liquid separation. Biological treatment can be aerobic or anaerobic depends on quality of raw effluent. Aerobic- ASP (Activated Sludge Process), MBBR/FAB (Moving Bed Bioreactor/ Fluidized Aerated Bioreactor), SAFF (Submerged Aerated Fixed Film Bioreactor), MBR (Membrane Bioreactor) Anaerobic- UASB (Up-flow anaerobic Sludge Blanket Reactor)
- Tertiary treatment: Sand and carbon filtration for removal of suspended solids and organic material. Ultra-filtration and Reverse Osmosis are the advanced technologies to be implemented for zero-discharge system.
