Aquatic creature treatment device for highly polluted water source

Abstract

The invention discloses an aquatic creature treatment device for a highly polluted water source capable of removing turbidity, nitrogen, organic matters and algae in water source water effectively andcapable of being unlikely to be blocked. The device comprises a treatment device body, wherein a front end suspended solid removal cavity, a middle mixing treatment cavity and a back end biological filter cavity which successively communicate are formed in the treatment device body; the polluted water source enters the front end suspended solid removal cavity from a water inlet pipe on one side of the treatment device body, flows through a filter screen and a trough which are formed obliquely to enter the middle mixing treatment cavity and flows through combined packing to enter a clean waterregion through an upper baffling gap and then enters the back end biological filter cavity from a lower baffling gap, enters a filter layer through a carrying plate, and finally is discharged from awater outlet pipe through a downflow weir. Sludge in the bottom of a reaction device is cleaned by way of enhanced aeration or back wash every once in a while and is discharged out of the treatment device body through a front sludge discharge pipe, a middle sludge discharge pipe and a back sludge discharge pipe.

Description

technical field [0001] The invention relates to the technical field of water treatment, in particular to a highly polluted water source water biological treatment device. Background technique [0002] The content of ammonia nitrogen and organic matter in surface water sources is generally high. Most of the organic matter in water sources are residual pesticides, persistent organic matter, environmental hormones and humus, etc., which are very famous precursors of disinfection by-products. A by-product of disinfection, which seriously threatens the safety of drinking water. Ammonia nitrogen is one of the culprits causing eutrophication in water bodies, causing frequent occurrence of algae in water bodies, and causing pollution of algae metabolites such as algal toxins. The removal of organic matter, nitrogen and algae is the guarantee. An important measure of drinking water safety has received widespread attention at home and abroad. [0003] The treatment methods of source ...

AI Technical Summary

Problems solved by technology

The source water biofilter process is a commonly used biological pretreatment technology. However, the enrichment of microorganisms and the formation of biofilm in the biofilter system are restricted by various factors such as the water quality of the source water, especially the suspended solids in the water body, which can reduce biological The contact between the membrane and the pollutants in the water source will increase the mass transfer resistance, and it will be easier to block the biological filter, resulting in a reaction dead zone, resulting in a decrease in the system's treatment performance. Therefore, excessive turbidity in the water source will greatly reduce the effect of biological pretreatment Will increase backwash frequency and operating cost of biofilter

[0004] Chinese patent application publication number CN 106242170 A, the application publication date is 2016.12.21, the name is "an integrated flocculation and sedimentation equipment suitable for the treatment of micro-polluted algae-containing water", which discloses a micro-flocculation zone arranged in sequence along the raw water flow direction , water distribution area, biological contact flocculation area, sedimentation area, and sedimentation equipment in the clean water area. This equipment requires high cost due to the need to put coagulants and coagulants. The use of chemicals not only increases the amount of subsequent sediment treatment, but also exists The problem of secondary pollution, which increases the production cost of tap water and is not conducive to the safety of drinking water

In addition, in highly polluted water sources with more suspended solids, equipment with this structure is prone to clogging

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