Complex active phosphorus source additive for treatment of phosphorus-lacking waste water and application thereof

Abstract

The invention provides a complex active phosphorus source additive for treatment of phosphorus-lacking waste water, which comprises the following components in mass percent: 0.01-0.5% of sodium humate, 0.1-0.1% of lecithin, 40-60% of phosphoric acid and the balance water used as a solvent; and the additive can also comprise 0.005%-0.1% of ATP disodium salt, 0.005%-0.1% of nucleotide and 0.05%-0.4% of citric acid. When the complex active phosphorus source additive of the invention is applied to the treatment of phosphorus-lacking waste water and especially waste water in paper making, the additive has high microbial activity utilization ratio, durable effect, good treatment effect and great application prospects and can improve the sludge activity.

Description

(1) Technical field [0001] The invention relates to a composite active phosphorus source additive for treating phosphorus-deficiency wastewater and its application in phosphorus-deficiency wastewater treatment. (2) Background technology [0002] Papermaking is one of the four great inventions in ancient my country and the crystallization of the wisdom of the working people in ancient my country; the modern pulp and paper industry has also made important contributions to the development of China's national economy. Yet nature has paid a terrible price when our country's treasures are used in today's industries. The pollution from pulping and papermaking has seriously endangered the development of aquaculture, agriculture and people's health in many areas. Therefore, the state has continuously strengthened the law enforcement of environmental protection. Especially in the past ten years, my country's paper industry has developed rapidly, and the pollution of the environment b...

AI Technical Summary

Problems solved by technology

However, due to the general lack of phosphorus in pulp and paper industry wastewater, the microbial nutrition in the biochemical stage of wastewater treatment is unbalanced. Although the industry supplements phosphorus nutrition by adding phosphate or industrial phosphoric acid, there are many problems: (1) Microorganisms can only Dissolved phosphorus nutrients are used, but common industrial phosphoric acid or phosphate easily forms hydroxyapatite precipitation with calcium salts in wastewater, causing the problem of phosphorus nutrient solidification, which cannot be absorbed by microorganisms; (2) it is precisely because phosphoric acid substances and calcium salts Metal ions such as salt react, the inorganic components in the sludge increase, and the sludge settleability is poor, which affects the treatment of the aeration tank; (3) Generally, the amount of phosphate is large, and the labor intensity of the workers is high, and due to the low microbial absorption rate in the activated sludge High, the total phosphorus in the effluent exceeds the standard; (4) The temperature is low in winter, it is easy to freeze, and the on-site operating conditions are relatively harsh

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