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Denitrification slow release filler as well as preparation and application methods thereof

A denitrification and slow-release technology, applied in chemical instruments and methods, waste fuel, anaerobic digestion treatment, etc., can solve the problems of unsatisfactory denitrification and denitrification effect, and achieve good wastewater treatment effect, prolonged residence time, high active effect

Active Publication Date: 2017-09-01
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 denitrification slow-release filler and its preparation and application method

Method used

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  • Denitrification slow release filler as well as preparation and application methods thereof
  • Denitrification slow release filler as well as preparation and application methods thereof
  • Denitrification slow release filler as well as preparation and application methods thereof

Examples

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Effect test

Embodiment 1

[0032] The filler and the reactor of the invention are used to treat simulated nitrate sewage. Activated carbon, polybutylene succinate, polycaprolactone and carboxymethyl cellulose are made into fillers of different particle sizes according to the mass ratio of 20:1:1:1, and filled to ZHDN with a height of 3m and an inner diameter of 0.5m -In the B2 type reactor, the filler is filled 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 in a ratio of 10:1. 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 80 mg / L to simulate the water quality of sewage, start the dosing system, and remove 30 mg of NO 3 - - Dosing carbon source methanol at a dose of N / L, the raw water is pumped into the reactor from the bottom of the reactor through a peristaltic pump, the hydraulic ret...

Embodiment 2

[0036] The filler and the reactor of the invention are used to treat simulated nitrate sewage. Activated carbon, polybutylene succinate, polycaprolactone and carboxymethyl cellulose are made into fillers of different particle sizes according to the mass ratio of 25:1:2:2, and filled to ZHDN with a height of 3m and an inner diameter of 0.75m -In the 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 the tap water to prepare water with a concentration of nitrate nitrogen of 80 mg / L to simulate the water quality of sewage, start the dosing system, and remove 30 mg of NO 3 -- Dosing carbon source methanol at a dose of N / L, the raw water is pumped into the reactor from the bottom of the reactor through a peristaltic pump, the h...

Embodiment 3

[0040] The filler and the reactor of the invention are used to treat simulated nitrate sewage. Activated carbon, polybutylene succinate, polycaprolactone and carboxymethyl cellulose are made into fillers of different particle sizes according to the mass ratio of 10:5:3:3, and filled to a ZHBN- In the B2 type reactor, the filler is filled 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, start the dosing system, and remove 20mg NO 3 - - Dosing carbon source methanol at a dosage of N / L, 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...

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Abstract

The invention particularly relates to biological denitrification filler as well as preparation and application methods thereof. The technical principle of the filler is that activated carbon and solid carbon are used as raw materials for preparation of biological denitrification filler, and the raw materials are mixed with anionic clay to be accommodated in an adaptive reactor; the reactor is equipped with a medicine adding system, a small amount of (lower than theoretical stoichiometric ratio) organic carbon is added from a water inlet position of the reactor to enhance removal of nitrate.The filler has a good denitrification effect, can also effectively solve the problem of secondary pollution caused by excessive liquid carbon.

Description

technical field [0001] The invention belongs to the application field of water treatment technology, and relates to a wastewater denitrification treatment process, in particular to a denitrification slow-release 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 nitrogen, nit...

Claims

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Application Information

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IPC IPC(8): C02F3/28
CPCC02F3/2806C02F2003/003C02F2101/163C02F2103/06C02F2305/06Y02E50/30
Inventor 李海松
Owner 知和环保科技有限公司
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