Mixed nutritional type denitrifying filler and preparation and application thereof

A technology of mixed nutrition and nitrification filler, applied in chemical instruments and methods, anaerobic digestion treatment, biological water/sewage treatment, etc., can solve problems such as unsatisfactory denitrification and denitrification effect, and achieve good wastewater treatment effect and operation effect. Good, the effect of speeding up the update

Active Publication Date: 2017-09-12
知和环保科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Aiming at the unsatisfactory effect of denitrification and denitrification in the conventional sewage treatment process, combined with the above background technology, the present invention provides a mixed nutritional denitrification filler and its preparation and application method

Method used

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  • Mixed nutritional type denitrifying filler and preparation and application thereof
  • Mixed nutritional type denitrifying filler and preparation and application thereof

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Experimental program
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Effect test

Embodiment 1

[0029] The filler and the reactor of the invention are used to treat simulated nitrate sewage. Activated carbon, sulfur, polybutylene succinate, polycaprolactone, and carboxymethyl cellulose are made into fillers of different particle sizes according to the mass ratio of 20:5:1:1:1, and the filling height is 3m. In the 0.5m ZHDN-B1 type reactor, the filler is packed in layers according to the particle size of 30mm, 20mm, 15mm, 10mm, and 5mm from bottom to top, and the filler and anionic clay are mixed into the reactor according to the ratio of 10:1. . Inoculate the domesticated activated sludge into the reactor, add sodium nitrate to tap water to make water with a concentration of nitrate nitrogen of 80 mg / L to simulate the water quality of sewage, and the raw water is poured into the reactor from the bottom of the reactor through a peristaltic pump. The hydraulic retention time of the sewage in the reactor is 60min, the detected nitrate nitrogen content in the water is less ...

Embodiment 2

[0033] The filler and the reactor of the invention are used to treat simulated nitrate sewage. Activated carbon, sulfur, polybutylene succinate, polycaprolactone and carboxymethyl cellulose are made into fillers of different particle sizes according to the mass ratio of 25:10:1:2:2, and the filling is up to 3m in height. In the 0.75m ZHDN-B2 type reactor, the fillers are filled in layers according to the particle size of 25mm, 10mm, 5mm, 3mm, and 1mm from bottom to top, and the filler and anionic clay are mixed into the reactor according to the ratio of 50:1. . Inoculate the domesticated activated sludge into the reactor, add sodium nitrate to tap water to make water with a concentration of nitrate nitrogen of 80 mg / L to simulate the water quality of sewage, and the raw water is poured into the reactor from the bottom of the reactor through a peristaltic pump. The hydraulic retention time of the sewage in the reactor is 60min, the detected nitrate nitrogen content in the wate...

Embodiment 3

[0037] The filler and the reactor of the invention are used to treat simulated nitrate sewage. Activated carbon, sulfur, polybutylene succinate, polycaprolactone and carboxymethyl cellulose are made into fillers of different particle sizes according to the mass ratio of 10:10:5:3:3, and the filling is up to 3m in height. In the 1m ZHBN-B2 reactor, the filler is packed in layers according to the particle size of 30mm, 25mm, 10mm, 5mm, and 3mm from bottom to top, and the filler and anionic clay are mixed into the reactor according to the ratio of 20:1. Inoculate the domesticated activated sludge into the reactor, add sodium nitrate to the tap water to prepare water with a concentration of nitrate nitrogen of 60mg / L to simulate the water quality of sewage, and the raw water is pumped into the reactor from the bottom of the reactor through a peristaltic pump. The hydraulic retention time of the sewage in the reactor is 45min, the nitrate nitrogen content in the water is detected t...

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Abstract

The invention specifically relates to a mixed nutritional type denitrifying biological filler and a preparation and application thereof. The mixed nutritional type denitrifying biological filler adopts the technical principle that activated carbon, sulfur and solid carbon source are used as raw materials to prepare the denitrifying biological filler, and the denitrifying biological filler and anionic clay are mixed and loaded into an applicable reactor; the filter simultaneously has the heterotrophism and autrophism denitrifying effects, so that the problem of secondary pollution caused by adding of liquid carbon sources is effectively solved, and the production of sulfur autrophism byproducts is flexibly controlled.

Description

technical field [0001] The invention belongs to the application field of water treatment technology, and relates to a waste water denitrification treatment process, in particular to a mixed trophic denitrification biological filler and a preparation and application method thereof. Background technique [0002] With the development of industry, water pollution is becoming more and more serious, among which nitrogen pollution accounts for a considerable proportion. Domestic sewage and some industrial wastewater contain a certain amount of nitrogen, especially coal pressurized gasification wastewater, coking wastewater, nitrogen fertilizer wastewater, etc. A large amount of untreated or improperly treated various nitrogen-containing wastewater discharged into rivers will cause serious damage to the environment, not only pollute drinking water sources, but also cause eutrophication hazards to rivers and lakes. Nitrogen exists in various forms in water bodies, including ammonia ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F3/28C02F101/16C02F103/06
CPCC02F3/2806C02F2003/003C02F2101/16C02F2101/163C02F2103/06
Inventor 李海松
Owner 知和环保科技有限公司
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