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CIP Wastewater Treatment

!!!!To ensure we provide you with a precise and comprehensive water treatment solution, please furnish us with your raw water quality report and target water quality report. Our engineers will analyze this data to develop a detailed and optimized integrated solution tailored to your specific needs.

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CIP (Cleaning In Place) system is widely used in the production processes of bottled water, bottled barrel water, carbonated beverages, tea/fruit juice, dairy products, alcoholic beverages, seasonings, daily chemical products, etc. Its wastewater is complex in composition due to cleaning agents, residual products, and process characteristics. The main components are as follows:

Chemical Pollutants

  • Alkaline cleaning agent: mainly sodium hydroxide (NaOH), with a concentration usually ranging from 0.5% to 4.0%, and a pH of up to 13-14.
  • Acidic cleaning agents: commonly used nitric acid, phosphoric acid or citric acid, with a concentration of about 0.5% -1.5%, and a pH lower than 1.
  • Disinfectants: such as hypochlorite (highly corrosive) or peracetic acid (PAA, environmentally friendly but irritating).

Organic Load

  • Residual products: such as milk protein, milk fat, and lactose in dairy wastewater (COD can reach over 4000 mg/L).
  • Cleaning aids: surfactants, organic solvents (benzene derivatives, phenols, etc.).

Nutrients and Sediments

  • Nitrogen and phosphorus nutrients: Loss of raw milk or phosphorus containing detergents leads to a total nitrogen (TN) of 52.2 mg/L and a total phosphorus (TP) of 6.75 mg/L.
  • Inorganic precipitation: bird droppings (MgNH ₄ PO ₄), Mg (OH) ₂, or Mg₃(PO ₄) ₂ are generated at high pH.

Wastewater Characteristics

Characteristics Of Wastewater In The Water Filling Industry

  • COD, N, P Pollution: The raw water itself is pure, and the pollutants mainly include complex organic compounds (COD), nitrate nitrogen (N), and phosphate (P) left by cleaning agents. However, this type of wastewater lacks easily degradable organic matter, and the COD: N: P ratio of its components is imbalanced. If biological treatment is used, hydrolysis acidification pretreatment and additional nutrient supplementation are required.
  • Instantaneous High Flow Discharge: CIP cleaning has strong periodicity, concentrated wastewater discharge, and large fluctuations in water volume.
  • Large Temperature Changes: The alternating use of hot and cold water during the cleaning process leads to unstable wastewater temperature.

Characteristics Of Wastewater In The Carbonated Filling Industry

  • High organic matter COD: mainly from syrup residues, pigments, essence and cleaning agents. The COD concentration is usually 1000 – 4000 mg/L, BOD₅ ≮ is 1200 – 1800 mg/L, and the BOD/COD ratio is>0.5, with good biodegradability.
  • High suspended solids (SS) and oil: The bottle washing water in the filling area contains suspended solids such as broken glass and pectin (SS up to 1000 mg/L), and the equipment cleaning wastewater contains oil and colloidal substances.
  • Nutrient imbalance: low nitrogen and phosphorus content (ammonia nitrogen<30 mg/L, total phosphorus<5 mg/L),Nutrients such as urea and phosphate need to be supplemented to maintain microbial activity.
  • PH and water quality fluctuations: Alternating use of acid-base cleaning agents leads to drastic changes in pH (2-12),And intermittent discharge causes significant fluctuations in water quantity and quality.

Characteristics Of Wastewater In The Tea Juice Filling Industry

  • High organic matter COD: including sugars (fructose, sucrose), fruit juice residues (pectin, fruit pulp fiber), tea polyphenols, amino acids, etc. The COD concentration is usually 1000-4000 mg/L, BOD ₅/COD>0.5, and the biodegradability is good.
  • High suspended solids (SS): fruit residues, tea leaves, crushed fruit peels, etc., with SS concentrations of 100-500 mg/L.
  • Nutrient imbalance: Low nitrogen and phosphorus content (ammonia nitrogen<30 mg/L, total phosphorus<5 mg/L), requiring supplementation of nutrients (such as urea and phosphate) to maintain microbial activity.
  • PH and water quality fluctuations: Alkaline cleaning agents (NaOH) and acidic cleaning agents (HNO₃ ) are alternately used, with a pH range of 2-12. Intermittent emissions: The CIP program (alkaline washing → water flushing → acid washing → disinfection) causes significant fluctuations in water quantity and quality.
  • Inhibitory substances: tea polyphenols (with strong inhibitory effects on microorganisms), residual sodium hypochlorite disinfectant (affecting biological treatment efficiency)

Characteristics Of Wastewater In The Dairy Filling Industry

  • High organic COD: Milk protein (casein, whey protein), milk fat, lactose, etc. The COD concentration is usually 800-3000 mg/L, and some high concentration wastewater (such as ice cream production) can reach 4000-7000 mg/L, even 20000 mg/L. BOD/COD > 0.5, Good biodegradability.
  • High suspended solids (SS): Residual raw milk and excipients, with a concentration of approximately 100-1000 mg/L.
  • High nutrient content: Total nitrogen (TN) reaches 90 mg/L (mainly from raw milk loss and nitric acid cleaning agents), total phosphorus (TP) reaches 16 mg/L (from raw milk loss and phosphorus containing detergents).
  • PH and water quality fluctuations: due to the alternating use of acid-base cleaning agents. During the morning and evening cleaning periods, emissions are concentrated and seasonal production changes are significant.

Common processes

Physical-chemical Treatment
Preprocessing

  • Grille/Filter: Remove large suspended particles (such as milk residue and packaging debris).

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  • Neutralization regulation: Mix acidic and alkaline wastewater or add neutralizing agents (such as lime) to control the pH to 6-9.

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  • Precipitation/coagulation: adding aluminum/iron salts to remove phosphorus and colloidal substances, especially suitable for high magnesium phosphorus wastewater

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Company

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With over 20 years of industry experience, we have established ourselves as a leading provider of beverage production line solutions worldwide. Our state-of-the-art manufacturing facility spans over 50,000 square meters and is equipped with advanced machinery and technology.


We pride ourselves on our commitment to quality, innovation, and customer satisfaction. Our team of experienced engineers and technicians work closely with clients to understand their specific needs and deliver customized solutions that exceed expectations.

FAQ

Q1: Are you a trading company or a manufacturer?
A1: We are a manufacturer, we supply the factory price with good quality,our Engineer Team with over 20 year's experience,welcome to visit!
Q2.How can I know your machine has good quality?
A2:We will send the video of testing the machine working condition for you before delivery,so you can send us your bottle samples for a trial.
Q3:What's your guarantee or the warranty of the quality if we buy your machines?
A3: We offer you high quality machines with 15 months guarantee and supply life-long technical support.
Q4: When can I get my machine after I paid?
A4: The delivery time is based on the exact machine you confirmed.
Q5: How can I install my machine when it arrives?
A5: We will send our engineers to your factory to install the machines and train your staff how to operate the machines.
Q6: How about the spare parts?
A6: After we deal down all the things, we will offer you a spare parts list for your reference.
Q7: How to join EQS and become an agent?
A7: We sincerely invite you to become our filling machine agent and jointly expand the market. By contacting us, submitting company information for qualification evaluation, and ultimately signing an agency agreement, you will receive comprehensive product training and market support.

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